Looping cut with the same length
In your example you can create  a &quot;ruler&quot;: select the 5 vertices of the corner, Shift+D to duplicate them, move over on the Z axis, rotate them 90 degrees on X axis with pivot point on the first vertex, create 4 loop cuts, select the first with Alt left click, move it on Y axis with vertex snap On, pointing at the second vertex of the ruler. Do the same for the others loopcuts. Repeat until done.